Steam-diffusing device for pressing-machines.



E.G.GREVER.

STEAM DIFFUSING DEVICE FOR PRESSING MACHINES.

I APPLICATION FILED FEB.7, 1910. I 1,000,597, Patented Aug. 15,1911.

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ED lllT ABD C. GREVEB, OF CINCINNATI, OHIO.

STEAM-DIFFUSING DEVICE FOR PRESSING-MACHTNES.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application filed February 7, 1910. Serial No. 542,399;

To all whom it may comm.-

A Be it known that I, EnwAnn' O. Gnnvnn, a

citizen of the UnitedStates of America, and

I surface'of the pressing head of the machine.

A further object is to produce a steam difiusing device, which is so constructed that steam is delivered to the cloth to be pressed in a uniform sheet or film, which is located between the cloth and the pressing surface of the machine.

These and other objects I attain in a de vice embodying the features herein described and illustrated.

In the drawings accompanying this application and forminga part thereof, Figure 1 is a perspective view of a simple pressing machine provided with an embodiment of my invention. A portion of the cloth cover for the steam distributing screen is shown torn away, for the purpose of illustration. Fig. 2 isaperspeotive view of a portion of a screen embodying my invention. Fig. 3 is a perspective view ofone of the strips, which is employed in weaving"- the screen shown in Fig. 2. ,Fig. 4c is a perspective view of a, steam distributing screen, similar to the screen shown in Fig.

2, but modified as to a detail of construction. Fig. 5 is a sectional view taken upon' line 5-5 of Fig. 2, upon a much enlarged scale. Fig. 6 is a sectional view on the line 6-:6, Fig. 4:.

The ordinary steam streams of steam to impinge upon the cloth to be pressed. The result, with such a construction, is -that the steam is not uniformly delivered over the surface of the cloth, but is concentrated at points opposite the delivery apertures.

vention steam is delivered in .a number of strip.

distributing platesfor pressing machines are provided with apertures, which permit a plurality of small Such conditions are apt to spot the cloth, or gives an uneven appear- 'ance to'the pressed surface. W1th rpy 'm-.

wide streams, which flow parallel to the face of the screen, so that a uniform sheet or film of steam is maintained adjacent to the delivery side of the screen, and between it and the cloth-to be pressed.

- The Screenyshown as embodying my invention, is composed of suitable metal, such as brass strips 5, which are interwoven to form the flat. screen. Each strip is specially stamped prior to the weaving operation, so as to form alternately arranged elevations 6 and depressions 7, as shown in *Fig. 3. The elevations and depressions are of ,equalwidth and are of about the width of the strip. An elevation 6011 one side of a strip forms a correspondingly located'deression 7 on the other side, and a shar ine of demarcation is formed between a jacent elevations and depressions on each v Circular protuberances or lugs 8 are formed on the surface of each depression by stamping each strip 5 to form circular recesses or cavities 9 in the surface opposite the protuberances.

When the strips-are interwoven, they are divided into two series, which extend at right angles to each, other and are so located, relative to each other, that the depressions on onestrip are located opposite to elevations on" thestrips'which cross'it. The projectionsS on the depressed surface separate the adjacent faces of the intersecting strips, thus forming a plurality of interior chambers located between the cooperating strips which form the screen. These chambers are squape and communi cate,-on one side of the screen, withtwo delivery apertures 10, and on the other side with two admission apertures, similar to the apertures 10, but extending at right angles to them. With this arrangement every'elevated surface of each strip, on the delivery side of the screen, is exposed to a.

-projected stream' of steam, which flows parallel or substantially parallel to the face of the screen, and which is equal in width to the elevated surface over which it passes. Under these conditions, theentire' delivery face of the screen is exposed to oppositively projected streams of steam, flowmg parallelftorihejaep ef the screen, and the result is that a sheet orfiim of steam of uniform density is maintained adjacent to. the delivery face of the screen, thus the steam will pass through the pressure cloth 16' evenly distributed.

In Fig. 1, I have shown a simple pressing machine, which consists of "a board 12 and a pressing head 13. The pressing head is provided with a steam space, to which steam is delivered through a steam pipe 14. The steam space is inclosed between the walls of ,the pressing head and a steam distributing screen 15, constructed as illustrated-in "Fig. 2 or Fig. 4. A cloth 16 is located over the screen 15', so that the cloth is located between the screen and the cloth to be pressed during the pressing operation.

In Fig. 4, I have illustrated a screen simi lar to the screen shown in Fig. 2, which con-. sists of interwoven strips l5 stamped to form alternately arranged elevations 6 anddepressions 7. An oblong protuberance or Ja 17 is formed on the surface of each depression 7 by stamping each strip so as to form an oblong depression in-the surface of the elevations 6 of the strips. The oblong cular In 8, shown on the strips in Fig. 2. When t e strips are brought irl juxtaposition, the oblong lugs 17 are at'l'right angles to each other, as'clearly shown/Kin Fig. 6.

What I claim is:

1. A steam diffusing dev'ie fnprising interwoven flat stri s having asspace. for steam between the a jacent faces of the interwoven strips.

2. A'steam difi'using device for pressing machines comprising interwoven flat strips, 7

each strip having projections stam ed therefrom where it crosses'another, an the projections holding the faces of the strips apart and forming steam chambers between the adjacent faces.

.EDWARD C. GREVER.

- Witnesses:

WALTER F. MUImAY,

E. W. MGCALLIBTER.

.lugs 17 are another embodiment of the cir-, 

